This is a full metal series with a bright blue face from G-SHOCK, which has pursued toughness since its birth in 1983.
The dial is coated with metallic blue to match the stainless steel bezel and band.
In order to achieve a full metal shock-resistant structure, a fine resin cushioning material is installed between the bezel and the case.
In addition, the band connection part has a three-legged structure to disperse the impact applied to the connecting pipe.
The metal band pieces have been given a dimpled finish, inheriting the resin band design of the original model.
The camera back uses a screw back with excellent airtightness.
The stainless steel bezel is formed into a three-dimensional shape through time-consuming forging, cutting and polishing processes, with the top surface given a hairline finish and the sloped sides given a mirror polished finish.

・Shock-resistant structure
・ Tough Solar (solar charging system)
・20 ATM waterproof function
・ Mobile link function (function linked with compatible mobile phones via Bluetooth ® communication)
- Needle retraction function (if the hands overlap the LCD display and are difficult to see, you can temporarily retract the hands from above the LCD display)
・World Time: 38 cities around the world (38 time zones, automatic summer time setting function) + UTC (Coordinated Universal Time) time display, home time city switching function
・ Stopwatch (1/100 second (less than 1 hour)/1 second (more than 1 hour), 24 hour meter, with lap/split)
- Timer (set unit: 1 second, maximum set: 60 minutes, measured in 1 second increments)
・5 time alarms/time signal
・Battery indicator display
- Power saving function (turns off the display after a certain period of time in a dark place to save power)
・Full auto calendar
・12/24 hour display switching
・ Operation sound ON/O FF switching function
・Date display (month/day display swap)
- Day of the week display (switchable between 6 languages: English, Spanish, French, German, Italian, and Russian)
・Double LED light: LED light for dial (with super illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)), LED backlight for LCD section (super illuminator, afterglow function, afterglow time switching (1.5 seconds)) seconds/3 seconds)
- When using the drive time function without solar power generation from full charge: Approximately 7 months When using power saving mode: Approximately 18 months * When not linked to a smartphone, normal quartz accuracy (average monthly difference ± 15 seconds) ) works with



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Casio  Blue  Silver  GMB2100GD-9A G-Shock Men's Full Metal Gold  Men Casio G-Shock GM-2100C-5AER